You have forgotten about punk (I mean real punk, not the Seattle variety). The 70s were great for music. I was 14 in 1970 and saw a lot of it first hand. It was easy to avoid disco and its associated crowd. It was the popular people from high school who went that way. The aging 60s rockers entering their solid periods (Neil Young) then Prog rock which mutated into music like the Mahavishnu Orchestra, then punk and new wave from the Sex Pistols to Devo to Pere Ubu. Awesome times.
